﻿/* Copyright (c) 2019 Rick (rick 'at' gibbed 'dot' us)
 *
 * This software is provided 'as-is', without any express or implied
 * warranty. In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 *    claim that you wrote the original software. If you use this software
 *    in a product, an acknowledgment in the product documentation would
 *    be appreciated but is not required.
 *
 * 2. Altered source versions must be plainly marked as such, and must not
 *    be misrepresented as being the original software.
 *
 * 3. This notice may not be removed or altered from any source
 *    distribution.
 */

using System.Diagnostics;
using System.Windows;
using System.Windows.Documents;
using System.Windows.Navigation;

namespace Gibbed.Gearbox.WPF
{
    public static class HyperlinkExtensions
    {
        public static bool GetIsExternal(DependencyObject obj)
        {
            return (bool)obj.GetValue(IsExternalProperty);
        }

        public static void SetIsExternal(DependencyObject obj, bool value)
        {
            obj.SetValue(IsExternalProperty, value);
        }

        public static readonly DependencyProperty IsExternalProperty =
            DependencyProperty.RegisterAttached(
                "IsExternal",
                typeof(bool),
                typeof(HyperlinkExtensions),
                new UIPropertyMetadata(false, OnIsExternalChanged));

        private static void OnIsExternalChanged(object sender, DependencyPropertyChangedEventArgs args)
        {
            if (sender is Hyperlink hyperlink && hyperlink != null)
            {
                if ((bool)args.NewValue)
                {
                    hyperlink.RequestNavigate += OnRequestNavigate;
                }
                else
                {
                    hyperlink.RequestNavigate -= OnRequestNavigate;
                }
            }
        }

        private static void OnRequestNavigate(object sender, RequestNavigateEventArgs e)
        {
            Process.Start(new ProcessStartInfo(e.Uri.AbsoluteUri));
            e.Handled = true;
        }
    }
}
